M5.9 earthquake 60 km SSE of Adak, Alaska
A magnitude 5.9 earthquake struck 60 km SSE of Adak, Alaska on Tue, Jun 11, 1957, 12:54 PM GMT-11 (23:54 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M6.8 100 km SW of Atka, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.9 (mw), moderate
- Local time
- UTC
- 1957-06-11 23:54:03 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 51.403° N, 176.195° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.9 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
- 6.8100 km SW of Atka, Alaska · 25310 days ago · 19 km deep · 70 km away
- 6.1Andreanof Islands, Aleutian Islands, Alaska · 25310 days ago · 35 km deep · 50 km away
- 6.476 km SSW of Adak, Alaska · 25271 days ago · 25 km deep · 71 km away
- 5.9106 km SSW of Adak, Alaska · 25268 days ago · 20 km deep · 83 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem886694 (also filed as ushis2239). Read Tue, Sep 29, 2026, 6:30 PM UTC.